Cisco 400-007 Exam With Confidence Using Practice Dumps

C (Lack of visibility and tracking): In cloud-native environments, organizations often struggle with monitoring and tracking workloads across dynamic, distributed, and multi-tenant architectures. Traditional visibility tools may not fully cover cloud-native assets like containers, serverless functions, or microservices, making it harder to detect threats and enforce policies.

D (Increased attack surface): Cloud-native architectures introduce many additional components—APIs, microservices, third-party integrations, and distributed data—which all expand the organization's overall attack surface. More entry points for attackers create additional security challenges compared to traditional on-prem environments.

Other options explained:

A: User roles can be managed with proper IAM systems.

B: Polymorphism refers to code behavior in programming, not a core security challenge in cloud-native design.

E: Credential validation is part of basic access control but not a top cloud-native challenge compared to visibility and attack surface expansion.

C (Transparent firewall): Operates at Layer 2, allowing filtering and inspection of traffic within the same subnet without requiring IP routing changes. It performs deep packet inspection while maintaining Layer 2 adjacency, making it ideal for intra-subnet traffic control in data centers.

This allows security segmentation inside broadcast domains, enforcing security policies even for east-west traffic.

Other options explained:

A: Routed firewalls require subnet boundaries and are not ideal for intra-subnet control.

B: VLAN ACLs provide basic filtering but lack deep packet inspection capabilities.

D: Zone-based firewalls are primarily designed for inter-subnet (Layer 3) traffic segmentation.

D (Deploy SD-WAN edge routers in data center, then controllers, then branches):This allows the SD-WAN fabric to be built and stabilized centrally first, then controllers are brought online for policy orchestration, and finally, branch migrations happen gradually without impacting existing traffic paths.

Other options explained:

A/B/C: These approaches risk service disruption or poor controller orchestration readiness during branch migrations.